<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="https://cdn.bootcss.com/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
    <link rel="stylesheet" href="css/style.css">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
</head>
<body>
<div class="container">
   <div class="row">
       <div class="col-md-4">
           <div class="list">内容</div>
       </div>
       <div class="col-md-4">
           <div class="row">
           <div class="col-6">
               <div class="list">内容</div>
           </div>
           <div class="col-6">
               <div class="list">内容</div>
           </div>
               <div class="col-6">
                   <div class="list">内容</div>
               </div>
               <div class="col-6">
                   <div class="list">内容</div>
               </div>
       </div>
       </div>
       <div class="col-md-4">
           <div class="list">内容</div>
       </div>
   </div>
</div>

</body>
</html>